Refer: https://help.pentaho.com/Documentation/7.1/0J0/0C0
$ sudo apt-get update
$ sudo apt-get install libwebkitgtk-1.0-0
$ unzip pdi-ce-7.1.0.0-12.zip
$ cd data-integration
$ chmod +x *.sh
$ sh spoon.sh

Technical notes, and other ideas.
Refer: https://help.pentaho.com/Documentation/7.1/0J0/0C0
$ sudo apt-get update
$ sudo apt-get install libwebkitgtk-1.0-0
$ unzip pdi-ce-7.1.0.0-12.zip
$ cd data-integration
$ chmod +x *.sh
$ sh spoon.sh